Dear all; I have a feature class called "Roads", objects of which participate in a network, am mentioning that just in case it has something to do with my issue, though I don't think so. Working locally, everything seems to be fine. I query and create three layers of the Roads feature class in my mxd, based on a value of the "RoadClass" field, value of 1 being a highway, all the way down to 3 for the smallest roads. The issue arises in the mxd on the server. The server generates an error and doesn�??t draw each roads layer according to the assigned symbology, instead it draws all of the layers using one width and color, with the following error message: <Msg time='2012-06-04T10:59:54' type='ERROR' code='103800' target='DigitalEg/Rehab.MapServer' machine='LOIS' user='?' process='4684' thread='9416'>Highways: An expected Field was not found or could not be retrieved properly.An expected Field was not found or could not be retrieved properly. [Roads]</Msg> <Msg time='2012-06-04T10:59:54' type='ERROR' code='103800' target='DigitalEg/Rehab.MapServer' machine='LOIS' user='?' process='4684' thread='9416'>Roads: An expected Field was not found or could not be retrieved properly.An expected Field was not found or could not be retrieved properly. [Roads]</Msg> I checked or any weird entries in my RoadClass field, and nothing is out of values from 1 to 3. Keep in my that these are 12,000 roads, so it will be very hard to check for illegal entries in other fields within all the roads, like the names of each one. You can see the service at this app: www.digitaleg.com/Digital_Egypt/El-Rehab/GIS/RehabEnglish.html and here is the link to the server layers: http://arcgis2.roktech.net/ArcGIS/rest/services/DigitalEg/Rehab/MapServer Can anyone please help? Many thanks in advance Raffi